Friction draft-rigging for railway-cars.



l J. F. OCONNOR. l

l PRIGTION DRAFT RIGGING PoR RAILWAY GARS.

APPLICATION FILED MAR. 17, 1913.

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if ZZZW4 Patented June' 17, 1913. f

UNITED STATES PATENT OFFICE.

JOHN F. OCONNOR, OF CHICAGO, ILLINOIS. ASSIGNOR TO WILLIAM H. DIINER, OF CHICAGO, ILLINOIS.

FRICTION DRAFT-RIGGING FOR RAILWAY-CARS.

V1 .Otis-073.

Specification of Letters Patent. Patented June 17, 1913.

Application filed March 117, 1913. Serial No. 754,748.

To a/ w71 om, it may-concern:

lle it. known that I, Jol-IN F. OCoNNoii, a rit izen of the United States, residing at Chicago, in the. county of Cook and State of Illinois. have invented a certain new and useful Improvement in Friction Draft-Rigging for Railway-Cars, of which the following is a full, clear, concise, and exact description. reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in friction draft rigging for railway cars.

The object of my invention is to provide a friction draft rigging of simple construction and eflicient operation.

ln the drawings forming a part of this specification Figure l is-a plan view partly ir. longitinliual .section of a draft rigging enibodying my invention. Fig. l -is a perspectiie view of the friction devices in assembled relation. Fig, fl is a perspective view of one of the antifriction rolls. Fig. 4 is a perspective view of one of the friction slices. Fig. 5 is ay perspective view f the wedge.

referring to the drawings 6 represents draft sills or parts of the car frame to which the draft riggingr is applied, 7 the end sill, S the buffer block, 9 the draw bar, l0 the draw bar carry iron, 11 front stop members, 12 rear stop members, 13 the draft yokel secured to the draw bar by the coupler key l-l, l5 the front follower, l0 the draft gear oi' compression resisting member comprising tln` shell i7 and the friction devices 18 and vsprings lil within the. shell. The shell is a hollow member, preferably cylindrical in shape. or circular in cross section, and closed at its rear end by the, preferably integral plattI 20, and open at: its forward end 21. 'The shell has an interior friction face Q2 with which the outer friction faces Q3 of the friction 'slices 2l engage. The friction shoes 2l are preferably three. in number, each shoe being provide-d at either edge with an antit'rietinn roll seat '35, and on its inner fare near its rear end with a Shoulder 26, the shoulders it of the shoes when the same are in assembled position forming a spring t for the front rnd of the inner spring 27 to hear against, the front end of the outer i S being seated against the rear end 2f! ot' the friction shoes, and both of said spring:-` beiug sealed at their rear ends against i the friction shell. '.lie wedge 30 is adapted to spread the friction slices, and comprises a central. preferably substantially cylindrical. member 31 provided with a plurality of radial extensions or lugs 32, there being onelng for each friction shoe. Each of said lugs is provided on either side with an antifrietion roll seat 33, which in the assembled position of the wedge and friction shoes is opposite an antifriction roll lseat of the 21d-t.- jacent slioe. ihen the friction shoes are in E5 assembled position. as illustrated in Fig. 2 .of the drawings, there 1s a sufficient space between the shoes to receive the lugs 32 of the wedge 30, and between each friction shoe and the adjacent side of a lug 32 of the 7-0 wedge is disposed an antifriction roll 34, there being two for each lug of the wedge.

The member 3l of the wedge is forwardly provided with a recess 35 to receive the head 3G of the connecting rod 37, which is ex- 75 tended through the wedge and the rear por- 0tion of the shell, being provided at its rearward end with the nut 38. On rearward.; movement of the wedge the lugs 32 through Y the antifriction rolls 34 exert a spreading 80 force against the edges of the friction shoes, spreading them outwardly in frictional contact with the internal frictional face of the shell. The employn'ient of two antifriction rollers for each wedging lug 32 of the wedge insures a lperfect release ofi'the parts in release movement of the gear.

The action of other parts of the draft rigging is well understood, and iieeds'no further description.

1. In a draft rigging for railway cars, a draft gear comprising a shell` springs, and friction devices within the shell, the friction devices comprising a plurality of friction-slices, and a. wedge to spread said slices, the said wedge havingr radial lugs'disposed between the edges of the friction slices.

2. In a draft gear, a shell, springs, and friction devices within the shell, the friction 105 devices comprising shoes, a wedge, and antifrietion rolls, the wedge having a central member and radially extended lugs, the antifriction rolls being interposed between the sides of said lugs and the edges of the friction shoes.

3. In a draft gear, a shell, friction devices, and springs within the shell, the friction devices comprising a plurality of shoes', a wedge within said slices, the wedge haring 110 shoes,

radially arranged lugs extended outwardly l the said wedge having means extended bebetween the shoes.

4. Ina draft gear, friction devices Within devices comprising a= plurality of friction shoes, a Wedge'within said shoes, and antifriction rolls, the Wedge being provided with radial lugs extended between said thevsides of said lugs being each provided-.With an antifriction roll sides of said shoes being each provided with an antifriction roll seat, 'and an antifriction roll interposed between'each roll seat of the wedge and the roll seat of the adjacent shoe.

5. In a draft gear, Wedge,

a shell, springs, and the shell, the friction and friction shoes within the shell,

Copies of this patent may be obtaixied for ve cent's each, by addressing thc seat, and the f a shell, springs, a

tween the edges of the shoes, and adapted to exert spreading pressure against the sides of said shoes.

In a friction draft gear, a shell, friction shoes, a Wedge, and antifriction rolls Within the shell, the wedge being provided with members outwardlyY extended between the sides of the friction shoes, and antifriction rolls between the sides of the outwardly extended members and the sides of the fric tion shoes.

JOHN F. OCON NOR. Witnesses:

ELEANOR L. NASH,

JOHN A. MARTINKUS.

Commissioner of Patents,

Washington, D. 0., 

